Column densities of various atoms and molecules as measured in the main component (at υ ~ −7.5 km s⁻¹) toward HD 167264 between the oldest available archival spectrum and the EDIBLES data. For Na, the black bar indicates the measurements and uncertainties using the Na I D lines; the green star represents those from the UV lines at 3300 Å. The lower panel shows similar measurements for HD 147933. We note that we used the Na I UV lines rather than the saturated Na I D lines.